Ukraine Fighting Spreads to Key Port City as Rebels Mount Attack

Fighting in Ukraine spread to the strategic port city of Mariupol, which suffered the deadliest attack yet as pro-Russian rebels mounted an offensive across the country’s easternmost regions.

At least 30 civilians died and 93 were wounded in rocket attacks Saturday in Mariupol, local officials said. The projectiles were launched from rebel-held territories, according to the U.S., NATO, the Organization for Security and Cooperation in Europe and the Ukrainian government. The separatists d...